Method of making hydrophobic coating on curved surface shell and endoscope

Abstract

The present invention provides a method of making a hydrophobic coating on a curved surface shell and an endoscope. The method forms the hydrophobic coating on the curved surface shell through the following steps. A nanoimprint elastic template is provided, and a nanoimprint structure is formed on the nanoimprint elastic template. A curved surface shell is provided, and a nanoimprint adhesive layer is arranged on the curved surface shell. A side where the nanoimprint structure is located in the nanoimprint elastic template and the nanoimprint adhesive layer are bonded together, and the nanoimprint structure is printed on the nanoimprint adhesive layer, and the nanoimprint adhesive layer is cured.

What is claimed is: 
     
       1. A method of making a hydrophobic coating on a curved surface shell of a capsule endoscope, comprising the following steps:
 providing a nanoimprint elastic template, wherein a nanoimprint template structure is formed on the nanoimprint elastic template; 
 providing a curved surface shell, wherein a nanoimprint adhesive layer is arranged on the curved surface shell; 
 binding the nanoimprint elastic template with the curved surface shell on a side where the nanoimprint template structure is located in the nanoimprint elastic template and where the nanoimprint adhesive layer is located, and printing the nanoimprint template structure onto the nanoimprint adhesive layer, by the steps of
 forming a nanoimprint assembly by placing the side where the nanoimprint structure is located in the nanoimprint elastic template on the nanoimprint adhesive layer; 
 putting the nanoimprint assembly in a sealed working chamber; 
 providing a flexible transparent cover film, 
 covering the flexible transparent cover film on the nanoimprint assembly, 
 extending over the edges of the nanoimprint assembly, 
 and providing drape portion of the flexible transparent cover film extend horizontally, to removably and conformally supported by a flexible bottom plate of the sealed working chamber and forming a releasable surface area contact, so as to form an accommodating cavity between the flexible transparent cover film and the bottom plate of the sealed working chamber to accommodate the nanoimprint assembly; 
 reducing air pressure in the sealed working chamber such that air pressure in the accommodating cavity is lower than the air pressure in the sealed working chamber in an initial state; and 
 increasing air pressure in the sealed working chamber such that the air pressure in the sealed working chamber is higher than the air pressure in the accommodating cavity; and 
 
 curing the nanoimprint adhesive layer to obtain the hydrophobic coating, which is a nanostructure printed on the nanoimprint adhesive layer of the curved surface shell. 
 
     
     
       2. The method of  claim 1 , wherein the nanoimprint adhesive layer is cured by heating or ultraviolet irradiation. 
     
     
       3. The method of  claim 1 , wherein the nanoimprint structure is a nano-conical structure, a nano-cylindrical structure, a rectangular pyramid structure or a triangular prism structure. 
     
     
       4. The method of  claim 1 , wherein the thickness of the nanoimprint adhesive layer is a value selected from 100 nm-5000 nm. 
     
     
       5. The method of  claim 1 , further comprising:
 forming a plurality of nanoparticles on the nanostructure of the nanoimprint adhesive layer after the nanoimprint adhesive layer is cured. 
 
     
     
       6. The method of  claim 5 , wherein the nanoparticles are formed on the nanostructure of the nanoimprint adhesive layer by evaporation or spraying. 
     
     
       7. The method of  claim 5 , wherein the nanoparticles are fluoride. 
     
     
       8. The method of  claim 1 , wherein the step of reducing air pressure in the sealed working chamber further comprising reducing air pressure in the sealed working chamber to 5 Pa to 100 Pa.